February 18: Winter storm — Al Roker’s holiday weekend forecast. Father of teen TikTok star kills stalker. Mikaela Shiffrin opens up about her Olympics journey.

<p>Al Roker is tracking that winter storm that’s bringing heavy snow and causing delays and accidents with millions in its path. Plus, a TikTok star says her father fatally shot an armed intruder after he tracked down her address and stalked her through the app. Also, Mikaela Shiffrin speaks with Hoda Kotb about her unexpected journey at the Olympic Games.</p>